Tafki dam geomembrane
Takaitaccen Bayani:
- Geomembranes da ake amfani da su don madatsun ruwa ana yin su ne da kayan polymer, galibi polyethylene (PE), polyvinyl chloride (PVC), da dai sauransu. Waɗannan kayan suna da ƙarancin ƙarancin ruwa kuma suna iya hana ruwa shiga sosai. Misali, polyethylene geomembrane ana samar da shi ta hanyar sinadarin ethylene polymerization, kuma tsarin kwayoyin halittarsa yana da karamci wanda da kyar kwayoyin ruwa zasu iya wucewa ta cikinsa.
- Geomembranes da ake amfani da su don madatsun ruwa ana yin su ne da kayan polymer, galibi polyethylene (PE), polyvinyl chloride (PVC), da dai sauransu. Waɗannan kayan suna da ƙarancin ƙarancin ruwa kuma suna iya hana ruwa shiga sosai. Misali, polyethylene geomembrane ana samar da shi ta hanyar sinadarin ethylene polymerization, kuma tsarin kwayoyin halittarsa yana da karamci wanda da kyar kwayoyin ruwa zasu iya wucewa ta cikinsa.
1.Halayen Aiki
- Ayyukan Anti-seepage:
Wannan shine mafi mahimmancin aikin geomembranes a cikin aikace-aikacen madatsun ruwa. Kyakkyawan geomembranes na iya samun madaidaicin madaidaicin da zai kai 10⁻¹² - 10⁻¹³ cm/s, kusan yana toshe hanyar ruwa gaba ɗaya. Idan aka kwatanta da laka na gargajiya anti-seepage Layer, anti-sepage sakamako ya fi ban mamaki. Misali, a karkashin matsi na kan ruwa guda, adadin ruwan da ke ratsawa ta cikin geomembrane kadan ne kawai na abin ta hanyar yumbu anti-seepage Layer. - Ayyukan Anti Huda:
Lokacin amfani da geomembranes akan madatsun ruwa na tafki, ana iya huda su da abubuwa masu kaifi kamar duwatsu da rassan da ke cikin jikin dam. Kyakkyawan geomembranes suna da ingantacciyar ƙarfin hana huda. Misali, wasu haɗe-haɗen geomembranes suna da yaduddukan ƙarfafa fiber na ciki waɗanda zasu iya tsayayya da huɗa yadda ya kamata. Gabaɗaya magana, ƙarfin hana huda ƙwararrun geomembranes na iya kaiwa 300 - 600N, yana tabbatar da cewa ba za a iya lalacewa cikin sauƙi ba a cikin hadadden yanayin dam ɗin. - Juriya na tsufa:
Tun da madatsun ruwa suna da tsawon rayuwar sabis, geomembranes suna buƙatar samun kyakkyawan juriya na tsufa. Ana kara magungunan rigakafin tsufa a lokacin aikin samar da geomembranes, yana ba su damar ci gaba da kwanciyar hankali na dogon lokaci a ƙarƙashin tasirin abubuwan muhalli kamar haskoki na ultraviolet da canjin yanayin zafi. Alal misali, geomembranes da aka sarrafa tare da tsari na musamman da fasaha na iya samun rayuwar sabis na shekaru 30 - 50 a waje. - Daidaita nakasawa:
Dam din zai fuskanci wasu nakasu kamar wurin zama da matsugunai yayin aikin ajiyar ruwa. Geomembranes na iya dacewa da irin wannan nakasar ba tare da tsagewa ba. Misali, suna iya mikewa da lankwasa zuwa wani matsayi tare da daidaita jikin dam. Ƙarfin su na iya kaiwa 10 - 30MPa gabaɗaya, yana ba su damar jure damuwa da nakasar dam ɗin ke haifarwa.
gwiwa bisa ga bukatun aikin. Kauri daga cikin geomembrane yawanci 0.3mm zuwa 2.0mm.
- Rashin rashin ƙarfi: Tabbatar cewa geomembrane yana da rashin ƙarfi mai kyau don hana ruwa a cikin ƙasa shiga cikin aikin.
2.Gina Mabuɗin
- Tushen Jiyya:
Kafin shimfida geomembranes, gindin dam ɗin dole ne ya zama lebur da ƙarfi. Ya kamata a cire abubuwa masu kaifi, ciyawa, ƙasa maras kyau da duwatsu a saman tushe. Misali, kuskuren lebur na tushe ana buƙatar gabaɗaya don sarrafa shi tsakanin ± 2cm. Wannan zai iya hana geomembrane daga karce kuma ya tabbatar da kyakkyawar hulɗa tsakanin geomembrane da tushe don a iya yin aikin anti-sepage. - Hanyar kwanciya:
Geomembrane yawanci ana raba su ta hanyar walda ko haɗawa. Lokacin waldawa, wajibi ne don tabbatar da cewa zafin walda, gudu da matsa lamba sun dace. Misali, ga geomembranes mai zafi-welded, zafin walda gabaɗaya yana tsakanin 200 - 300 ° C, saurin walda yana kusan 0.2 - 0.5m / min, kuma matsin walda yana tsakanin 0.1 - 0.3MPa don tabbatar da ingancin walda da hanawa. matsalolin yabo da rashin walda ke haifarwa. - Haɗin Wuta:
Haɗin geomembranes tare da tushe na madatsar ruwa, tsaunuka a bangarorin biyu na dam, da dai sauransu a gefen dam yana da matukar muhimmanci. Gabaɗaya, za a karɓi ramuka, shingen kankare, da sauransu. Alal misali, an kafa mahara tare da zurfin 30 - 50 cm a kafuwar dam. Ana sanya gefen geomembrane a cikin madaidaicin rami kuma an gyara shi tare da ƙaƙƙarfan kayan ƙasa ko siminti don tabbatar da cewa geomembrane yana da alaƙa tam tare da tsarin da ke kewaye da kuma hana zubar da ciki.
3.Maintenance da dubawa
- Kulawa na yau da kullun:
Wajibi ne a bincika akai-akai ko akwai lalacewa, hawaye, huda, da dai sauransu a saman geomembrane. Misali, a lokacin aikin dam, ma’aikatan kula da aikin na iya gudanar da bincike sau daya a wata, tare da mai da hankali kan duba geomembrane a wuraren da ruwan yakan canza akai-akai da kuma wuraren da ke da manyan nakasar dam. - Hanyoyin Dubawa:
Ana iya amfani da dabarun gwaji marasa lalacewa, kamar hanyar gwajin walƙiya. A cikin wannan hanya, ana amfani da wani irin ƙarfin lantarki a saman geomembrane. Lokacin da aka sami lalacewa ga geomembrane, za a haifar da tartsatsin wuta, ta yadda za a iya samun wuraren da aka lalace da sauri. Bugu da kari, akwai kuma hanyar gwajin vacuum. An kafa sararin samaniya a tsakanin geomembrane da na'urar gwaji, kuma ana yin hukunci da wanzuwar yabo a cikin geomembrane ta hanyar lura da canji a cikin digiri.
Siffofin samfur
